pc98/boot2/boot2.c

94 static struct dsk {
104 } dsk;
202     if ((*(u_char *)PTOV(0x482) >> dsk.unit) & 0x01)
213     p = (u_char *)PTOV(0x460 + dsk.unit * 4);	/* SCSI equipment parameter */
227     if (dsk.disk == 0x30) {				/* 1440KB FD */
230     } else if (dsk.disk == 0x90) {			/* 1200KB FD */
233     } else if (dsk.disk == 0x80 || is_scsi_hd()) {	/* IDE or SCSI HDD */
235 	v86.eax = 0x8400 | dsk.daua;
254     dsk.head = (di >> 8) & 0xff;
255     dsk.sec = di & 0xff;
256     dsk.start = 0;
305     if (dsk.type == TYPE_FD)
333     dsk.daua = *(uint8_t *)PTOV(0x584);
334     dsk.disk = dsk.daua & DRV_DISK;
335     dsk.unit = dsk.daua & DRV_UNIT;
336     if (dsk.disk == 0x80)
337         dsk.type = TYPE_AD;
338     else if (dsk.disk == 0xa0)
339         dsk.type = TYPE_DA;
340     else /* if (dsk.disk == 0x30 || dsk.disk == 0x90) */
341         dsk.type = TYPE_FD;
342     dsk.slice = check_slice();
390 		   dsk.unit, dev_nm[dsk.type], dsk.unit,
391 		   'a' + dsk.part, kname);
481     bootinfo.bi_bios_dev = dsk.daua;
483 	   MAKEBOOTDEV(dev_maj[dsk.type], dsk.slice, dsk.unit, dsk.part),
555 		dsk.type = i;
557 		dsk.unit = *arg - '0';
558 		if (arg[1] != ',' || dsk.unit > 9)
561 		dsk.slice = WHOLE_DISK_SLICE;
563 		    dsk.slice = *arg - '0' + 1;
564 		    if (dsk.slice > PC98_NPARTS + 1)
570 		dsk.part = *arg - 'a';
571 		if (dsk.part > 7)
575 		    drv = dsk.unit;
576 		dsk.disk = dev_daua[dsk.type];
577 		dsk.daua = dsk.disk | dsk.unit;
605 	if (dsk.type == TYPE_FD)
610 	sl = dsk.slice;
617 	    dsk.slice = sl;
625 	    dsk.start = dp->dp_scyl * dsk.head * dsk.sec +
626 		dp->dp_shd * dsk.sec + dp->dp_ssect;
628 	if (drvread(sec, dsk.start + LABELSECTOR))
632 	    if (dsk.part != RAW_PART) {
637 	    if (dsk.part >= d->d_npartitions ||
638 		!d->d_partitions[dsk.part].p_size) {
642 	    dsk.start += d->d_partitions[dsk.part].p_offset;
643 	    dsk.start -= d->d_partitions[RAW_PART].p_offset;
648 	if ((i = drvread(p, dsk.start + lba)))
706     bpc = dsk.sec * dsk.head;
709     head = x / dsk.sec;
710     sec = x % dsk.sec;